Improvement in gridirons



UNITED STATES PATENT OFFICE.

CHARLES NOBLE, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO CHARLES NOBLE& OO., OF SAME PLACE.

IMPROVEMENT IN GRIDIRONS.

Specification forming part of Letters Patent No. 120,528, dated October31, 1871.

To all whom it may concern:

Be it known that I, CHARLES NOBLE, of Philadelphia, county ofPhiladelphia, State of Pennsylvania, have invented certain Improvementsin Cooking-Stoves, of which the following is a specication:

My invention consists in the combination of a covered gridiron with theupper hearth-plate of a cooking-stove, in which are formed openings forthe passage of air into and through the hearth, all as fully describedhereafter; the objects of my invention being' to maintain the emberswhich are raked down into the hearth beneath the gridiron in a state ofignition during the operation of broiling, and also to prevent smoke andgases from the embers from rising upward between the bars ofthe gridironand deteriorating the iiavor ofthe meat.

Figure 1 is a vertical section illustrating my invention; Fig. 2, a planview; and Fig. 3, a transverse vertical section on the line 1 2, Fig. 1.

A represents the top hearth-plate of a cooking-stove, and this plate hasan elongated opening, a, near the edge of which is a rib, b, withinwhich fits the rib d on the under side ofthe gridiron B 5 the latterconsisting of a 'frame with transverse ba-rs e, in which are formedchannels communicating with that formed in the frame, as in othergridirons of this class.

It is a common practice in using cookingstoves, especially those inwhich wood is employed as a fuel, to rake ignited embers from therire-place into the recess ofthe hearth-plate and place over the whole agridiron for broiling meat, &c. I overcome these objections by adaptingthe ordinary gridiron, provided with its closelyitting cover X, to anopening of corresponding shape in the hearth-plate and forming in thelatter, near the front edge of the same, a number of openings, w. Thefact of the gridiron being provided with a non-perforated cover andfitting closely to the hearth-plate prevents the smoke and gases fromthe embers from rising upward and deteriorating the flavor of the meat,and the embers are maintained in an ignited state, owing to thecontinuous draught produced by ine jets of air entering the opening asindicated by the arrows, and passing through the closed hearth beneaththe gridiron to the fire-place of the stove and through the latter tothe outlet-pipe.

It will be seen that by merely perforating the ordinary hearth-plate, orby substituting a perforated for the usual plate, the necessity ofremoving the entire base-plate of the stove is obviated. By using theperforated plate, also, the air is admitted in fine jets instead of in awide stream, which consumes the cinders too rapidly, and impairs theefficiency of the utensil. Greater efficiency may be attained byproviding the heartlrplate with a perforated slide for regulating thepassage of air through the openings.

The hearth-plate A, covering the opening in the base-plate of a stove,perforated near its edge, and having an opening, a, to which is fittedthe covered gridiron B, as and for the purpose described.

In testimony whereof I have signed my name to this speciiication in thepresence of two subscribing witnesses.

OHAS. NOBLE.

Witnesses:

SAMUEL SMITH,

F. B. RICHARDS. (154)

